Drill rig



1 Filed Jiily'14, 1945 July 31 1951 c. w. KANDLE I 2,562,276 Y DRILL RIG 3 Sheets-Sheet l IN VEN TOR.

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QA zforzzez/ July 31, 1951 C. W. KANDLE DRILL RIG 5 Sheets-Sheet 2 Filed July 14, 1945 INVENTOR Cwr/as W AZzmzfe July 31, 1951 c. w. KANDLE DRILL RIG 5 Sheet's-Sheet 5 Filed July 14, 1945 IN V EN TOR.

Patented July 31, 1951 U N I T ED S TATE S" OFFICE 2' 2,562,276 DRILL RIG Charles W. Kandle, Chicago, Ill. Application J uly 14, 1945, Serial 'No. 605:032

2 Claims.

foldable and portable and which can be set at practically any location for drilling holes both perpendicular and at an angle.

Another-object is to provide a rig which can "be extended from a truck or boom to "hold a -'drilla't a distance therefrom.

Another object is 'to'provide a simple track construction for guiding a rotary drill'in digging a hole in the ground.

Another object is to provide -a drill in combination with a rig. that will automaticallycut *its 'way into .theground guided by the rig.

Another object is to provide a portable 'rig that serves to positively guide the drill in its operation and that-canbe used as a derrick for "lifting the drill from the ground.

Another object .is to provide a rig which con- 'trols the rate of drilling where heavy drills are employed and which provides a simple and rapid system for unloading the dirt from the flights without removingthe drill from the hole.

Other objects and advantages will beset forth in' connection with the description of an embodiment ofthe invention illustrated in the accompanying drawings;

' :In the drawings: 1

Figure 1 is a perspective view of the rig and drill in use; 1 I

Fig. 2 is a top plan view of the rig and drill; Figf3 is a front elevation-of the same; Fig. 4' is a side elevation showing the braces "supported on the ground;

Fig.5 isa horizontal'sectl'on taken onllin 5-5 g of Fig. 3' just above thecarriage;

.Fig. 6 is a vertical section taken on line 6-5 off Fig. 3 and showing the construction o'ithe .end

of the .carriage for holding one arm of the motor;

Figf'l'is asimilarsection on line 1-1 of'Fig. 3 at the other end of the carriage;

Fig. 8 is a detail enlarged view showing one form of Windlass construction; and

Fig. 9 is a partial front elevation showing another form of Windlass construction.

The drill illustrated isof'the rotary type and comprises a substantially flat drill head I with 'an 'open 'sector'havin'g a radial cutting blade 2 set at an angle therein, with a central lead screw 3, 'a vertical drive shaft 4 having a spiral flight "5 welded thereto and extending upwardly from the head I, and a motor 6 mounted on the upper 'end of shaft 4 and having a drive coupling 1 for driving the drillfrom the motor.

Thecoupling '1 maybe disconnected'to provide for removal of the motor from the drill and facilitate portability of the same.

Themotor G has'two opposite laterally extending handles or arms -8 and 9, respectively, generally employed for manual guidance of the drill and preventing turning of the motor housing instead of the drill. The arm 8 is a round rod extension removably coupled to a short rodlike handle on the motor housing. Arm 9 is generally a cast handle on the motor housing "and contains a switch box or housing [-0 to which is connected the electrical conduit II for sup- "plying current to the motor.

A top handle [2 is also provided on the motor housing to facilitate handling.

The-rig is -adapted totake the place of manual holding the motor 6 against turning, and comprises a pair of upright posts 1-3 having pointed lower ends 14 adapted to be driven into the ground on 'oppositesides of the location for the hole to be drilled, and a carriage l5 bridging the space between the posts and adapted to ride down'the'posts along with the motor 6 as the drill cuts its way 'into the'ground.

The carriage l5 constitutes a floating cross member having ends 15 disposed at right angles thereto and to which the corresponding arms 8 and'F-Q are suitably clamped by U-shaped clamps 1''! which pass over the top and bottomof the respective ends and are secured thereto by removable tapered pins or bolts l8 extending downwardly through the ends l6.

'The clamp 1-1 'which'secures arm 8 preferably has a pair of tapered blocks IS in its corners serving'to center the arm 8 relative to the correspondin'gend IS. The clamp 11 which secures arm '9 'preferablypasses around the rectangular switch housing 10 which .has the same vertical dimension'as the respective end l6.

j The "carriage I5 is secured to the posts I 3 '.by means of a pair of rollers .20 mounted on stub axles 2| secured to each corresponding end It 1 and adapted to embrace the respective post. A

cross member 22 secures the outer ends of axles 2| in place.

The carriage I5 is supported by the motor arms 8 and 9 and rides on posts l3 as tracks when the motor moves downwardly with the drilling operation.

The posts 13, in addition to being held by points M, are rigidly held in parallel spaced relation by a curved cross member 23 having end cylindrical heads 24 through which the corresponding posts pass. The heads 24 are supported by the tapered pins 25 which removably secure points I4 to the corresponding posts I3.

A top cross member 26 of channel iron has downwardly extending cylindrical end members 21 which fit into the upper ends of the hollow tubular posts l3 and tapered pins 28 secure the posts thereto.

The rig is held in vertical position or at a predetermined angle by means of one or more laterally extending braces 29 for each post [3. The braces 28 are pivotally 'pinned to corresponding brackets 39 secured to the posts near the upper ends thereof.

Where a single brace 29 is employed for each post the outer end of the brace is provided with an adapter or clevis 3| for securing the same to an eye on a truck or on a boom. Various adapters 31 may be employed depending upon the member to which the brace is to be fastened. For telephone line installations the adapters 3 1 are constructed to secure to the rear end of a service truck as illustrated in Fig. 1.

Where a double brace 29 is employed for each post, as illustrated in Fig. 4, the braces extend in opposite directions and have pivotal feet 32 thereon for supporting the same on the ground and preventing slippage.

' Thebraces 29 are preferably extensible and each is constructed of a rod member. telescoped by a tubular member. A series of spaced holes 33 are provided in either member to register with one or more holes in the other for receiving a tapered pin adapted to secure the members in fixed relation and provide a predetermined adjusted length for the brace.

The rig may be used as a derrick for hoisting the drill from the hole and for other purposes, if desired.

As illustrated in Fig. 8, pulley 34 is swivelly suspended from the center of cross member 26 and a .Vll'ldlQSSdllll'l'l 25 is removably clamped to the braces 29. A cable 39 is wound on the drum 35 and passes over pulley 34 for lifting operations.

The drum 3:") has a crank 37 for turning the same and a lock 38 for securing the same against turning.

The power Windlass shown in Fig. 9 comprises a small reversible electric motor 39 connected by .-a worm gear to drive a short drum 40, and the unit is mounted on a platform 4! .detachably secured on top of the upper cross bar 26. s

- The rig is quickly assembled and disassembled and the parts are light in weight and readily portable. They can be assembled at one site and ,transported to'another in semi-assembled relation as where a series of holes are to be drilled.

The Windlass attachment provides a means whereby a heavy drill may be raised to position during assembly and may be partially supported by the cable during drilling so as to control the rate of drilling by avoiding too much weight on 'the head i and blade 2, and thereby avoiding stalling of the motor 6..

\ The soil may be quickly removed from the hole without removing the drill. This is accomplished by lifting the drill slightly with the Windlass while leaving the motor 5 operating, thereby rapidly spinning the drill and its spiral flights so that the dirt thereon is quickly raised to the top and thrown radially clear of the flights. When the flights are thus cleared the drill is again lowered to cutting position and the actual rate of rotation of the drill is governed by the type of soil encountered and the weight of the drill and motor applied to the head.

Various embodiments of the invention may be employed within the scope of the accompanying claims.

I claim:

1. In combination, a portable earth drill unit comprising a drill shaft carrying a drill head at its lower end, a spiral flight extending upwardly along the shaft and a motor disposed on the upper end of the shaft for rotating the same, said motor having a pair of opposite laterally extending arms secured thereto to assist in guiding said drill unit, a separately portable drill rig unit comprising a frame adapted to be supported on the ground and to be secured against movement during drilling, said frame providing a pair of substantially vertical tracks on opposite sides of the drill unit, and roller means secured to each of said arms engaging said track during drilling operations whereby the force of the motor torque is absorbed by the frame to prevent rotation of the motor bodily relative to the frame.

2. In combination, a portable earth drill unit comprising a drill shaft carrying a drill head at its lower end, a spiral flight extending upwardly along the shaft and a motor disposed on the upper end of the shaft for rotating the same, said motor having a pair of opposite laterally extending arms secured thereto to assist in guiding said drill unit, a separately portable drill rig unit com prising a frame adapted to be supported on the ground and to be secured against movement during drilling, said frame providing a pair of tracks on opposite sides of the drill unit and adjustable angularly of the ground to provide for selected vertical and angular drilling operations, roller meanssecured to each of said arms engaging said track during drilling operations whereby the force of the motor torque is absorbed by the frame to prevent rotation of the motor bodily relative to the frame, and a cable hoist carried by said frame above the drill unit for lifting the latter. from a drilled hole in the ground.

CHARLES W. KANDLE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Houston June 15, 1943 

